1 Milking Shorthorns that qualify for the “Native (N)” designation, identifying them as pure, old line, dual purpose Milking Shorthorns, as verified by the AMSS office.

2 Cattleman's Texas Longhorn Registry.

3 Each of these has an independent, stand-alone registry and conservation program. In addition, each has contributed to the Colonial Spanish breed.

⁴ Includes horses whose pedigrees are absent of outcrosses after 1930.

⁵ This includes several different registries, each with somewhat different goals (SMR, SSMA, SBBOA, AIHR, HOA). Under this umbrella some strains have independent conservation programs and those are noted individually.

⁶ Includes Brabant, the European ancestor of the American Belgian, with a distinct type. The Brabant is globally rare.

1 Breed identity in poultry breeds is challenging. Many breeders of all kinds (exhibition, production, hatchery) are diligent in breeding standard-bred birds. Other breeders in each category resort to crossbreeding to achieve their goals, and yet promote their birds as standard-bred. The Livestock Conservancy is unable to validate each breeding program, but buyers are encouraged to ask if birds offered for sale are pure-bred and meet breed standards.

2 Varieties that are distinct but not APA recognized include Chocolate, Jersey Buff, Midget White, Lavender, and a host of other distinct color varieties. Does not include broad-breasted varieties, because they are not endangered.